Making



(No Model.)

F. A. CLARK. MAKING SPEGTAGLE TEMPLES.

No. 328,920. Patented Oct. 27, 1885.

llNiTED STATES PATENT Crr rcn.

FRANKLIN A. CLARK, OF MILFORD, CONNECTICUT.

MAKING SPECTACLE-TEMPLES.

SPECIFICATION forming part of Letters Patent No. 328,920, dated October 2'7, 1885.

Application filed February 16, 1885. Serial No.156, 035. (No model.)

and the letters of reference marked thereon,

to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a side view of one series of rolls and partial view of the companion roll; Fig. 2, a plan view showing the face of the series of rolls in a fiat plane; Fig. 3, a temple com plete; Fig. 4, a section through the rolls in the first cavity enlarged; Fig. 5, asection through the final or finishing cavity enlarged; Fig. 6, a transverse section of the blank as produced by the several operations enlarged; Fig. 7, the blank as cut from a piece of wire preparatory to the introduction to the first operation; Fig. 8, the same blank after the first operation.

This invention relates to animprovement in device for the manufacture of spectacletemples, the object being to draw the temple from a piece of Wire, which in size is sufiicient to form the bulb or enlargement required at the two ends-such, say, as seen in Fig. 3 and which in transverse section is flat upon one side and semicircular upon the other side, the two ends a a. being left sufficiently large to finish, the one for the bulb at the tipand the other for the joint. In some cases the body of the temple is round in transverse section, my invention being adapted to either shape.

Temples have been rolled from wire; but in such rolling, if the temples are to be round, the cavities in the rolls are of corresponding shape in transverse section, and the drawing.

made in several operations; but as in rolling there will be a fin formed between the rolls each successive rolling must be performed so as to work out that fin-that is to say, if it be a temple round in transverse section, the operator turns the blank, or intends to do so, onefourth over, so that the fin formed inthe first operation will be rolled down in the sec oncl, and the fin formed in the second will be quired until the final operation, when the flat sideis produced; hence the same difficulty exists no matter what the final shape of the temple is to be. Owing to this tendency to twist in the operation of rolling, so many temples are ruined in the operation that rolls have been very little used for this purpose, manufacturers preferring dies for striking up the temples rather than rolling.

The object of my invention is to construct the rolls so that the same relative position of the blank to the rolls may be preserved throughout the entire operation; and it consists in constructing the successive cavities angular in shape and so as to produce a corresponding angular-shaped blank, whereby the angle of the blank will aid in preserving its proper relation to the roll, and as more fully hereinafter described.

In the illustration I show a series of six rolls, A, B, C, D, E, and F. They may be made as separate rolls, secured together upon a common arbor, or they maybe made in one solid roll, or in separate rolls on separate arbors. In the first roll, A, a cavity, a, isformed of angular shape, here shown as right angular, (see Fig; 4,) the length of the cavity being the length of that part of the cavity reduced at the first operation, the cavity a terminating in a larger cavity, G, at each end, which cavity extends around the roll from one end of the cavity a to the opposite end. The second cavity, 1), is of the same angular shape, but reduced and increased in length, so that the drawing of the blank by the reduction will correspond to this length. A like enlarged cavity, H, extends around rhe roll from one end of the cavity 1) to the other. In the third roll a like angular cavity,'c, is formed, but further reduced, and terminating at each end in a like enlarged cavity, I. So with the fourth, the cavity d is reduced and increased in length, terminating at each end in an enlarged cavity, J, and in the fifth the cavity 6 is still further reduced and increased in length, terminating at each end in a cavity, E, preserving throughout the same angular shape of the cavity. If the first be right angular, then all the succeeding cavities are right angular. The final cavity, f, is of the length and shape for the finished temple between the bulbs, and in this illustration it is semicircular on one side and flat upon the opposite side. Each roll of the pair, as seen in Fig. 1, has corresponding cavities, except as to the last. In that case it is flat, L representing the second roll. The cavity f is therefore semicircular in transverse section, and the adjacent face of the companion roll is flat, as seen in Fig. 5.

Thus constructed a blank out to the required length is first introduced between the rolls into the cavity a,-which will bring the blank into the corresponding square or angular shape, as seenat 9, Fig. 6. The blank is then passed through the second cavity, the blank increased in length and reduced in size, but the same shape preserved, as seen at h, Fig. 6, and so the third operation reduces the blank, as seen at i, Fig. 6, the fourth,'as seen at Z, Fig. 6, and the fifth, as seen at m, Fig. 6, preserving the same angular shape. At each operation more or less of a fin will be formed between the rolls; but in the second operation the blank is turned to present the fin into the angles in the cavities, so that the second operation will roll the fin, if there be any, upon the other two angles. In the third operation the two angles upon which the fin is formed, or which laid in the plane between the rolls will be brought into the angle of the cavities, and'so on through, turning the blank through each successive operation. .The number of rolls or cavities may be according to the work to be produced; but in ordinary steel-work eight or ten operations are desirable to produce the best result on light temples. After the blank has been reduced in the last angular cavities,

it isnext introduced into the final shaping cavity, (here represented as the semicircular cavity f,) and from, which the temple passes in its complete shape, as seen at n, Fig. 6. If,

however, the temple is to be round, the cavity in thetwo rolls will be of corresponding circular shape, as indicated in broken lines, Fig. 5, it being understood that the last angular operation leaves just sufficient metal to fully form this finished shape.

By this construction of rolls I am enabled to work the blank without the slightest twist from beginning to end; hence there is no other 6c distress of metal than that of simply its reduction, and the final shape is correspondingly perfect.

As I have before stated, the series of cavities may be made in a series of rolls,or in separate rolls combined together, or in separate rolls on different arbors,it only being essential to my invention that there shall be a series of cir- 'cumferential cavities, each angular in transverse section, and each successive cavity reduced in size, the cavities correspondingly increasing in length and terminating at each end in an enlarged space or cavity. The final shaping of the temple into the half-round or round shape described may be produced in dies in the usual manner, the successive operations by the angular cavities bringing it into shape -to be introduced to such dies, the dies for this operation being such as commonly used by spectacle-manufacturers in the final shaping of the temple; but I prefer to pro duce the last operation by rolling, as described.

I claim- 1. The herein-described improvementin rolls for spectacle-temples, consisting in companion rolls having circumferential cavities formed therein of angular shape in transverse section, said cavities forming a series successively increasing in length, but diminishing in transverse area, and each cavity terminating at each end in an enlarged cavity or recess in the face of the rolls, substantially as described.

2. A series of companion rolls, each roll 95 having a circumferential cavity formed therein of angular shape in transverse section, the cavity increasing in length in each succeeding roll, but diminishing in transverse area, and the said cavity of each 'roll terminating at IOO each end in an enlarged cavity or recess, substantially as described.

FRANKLIN A. CLARK.

Witnesses:

JOHN W. FOWLER, ALBERT WV. PIERCE. 

